brown stuff

This is a discussion on brown stuff within the Beginner Saltwater Aquariums forums, part of the Saltwater Fish and Coral Reef Tanks category; -->
i am still getting brown film on my glass i think it is diatom. tank has been up for about 6 months now. 30 ...

I don't know about salt water but for fresh water if you scrape the glass with sharp object it will expose the silicates in the glass to the diatoms again and cause a longer problem. If you are using something sharp, try a softer cleaning object. If not then more lighting and circulation are often cures for diatoms.